Footwear sole



FIG. 1 is a front perspective view;

FIG. 2 is a front view;

FIG. 3 is a back view;

FIG. 4 is an inner side view;

FIG. 5 is an outer side view;

FIG. 6 is a top view; and,

FIG. 7 is a bottom view.

The broken line showing of the upper is for illustrative purpose only and forms no part of the claimed design. 

The ornamental design for footwear sole, as shown and described. 